Gingival polyps may be caused by long-term mechanical or drug stimulation of the gums, such as caries, periodontal disease, phenytoin sodium drug stimulation. 1. Caries: when dental caries close to the subgingival, due to plaque and gums missing the pressure of the side wall of the teeth, may grow to the cavity, abnormal growth of the gums, touch easy to bleed. 2. Periodontal disease: poor oral hygiene conditions tartar accumulation can cause inflammation of the gums, long-term stimulation can also cause gingival polyps, can also be seen in the bad restorations or external stimulation caused by bad habits. 3. Drug stimulation: long-term use of phenytoin sodium, nifedipine and other drugs can also cause gingival hyperplasia, accelerating the growth and generation of gingival polyps. Gingival polyps are recommended to the hospital as soon as possible to deal with the removal of local stimuli, to avoid polyps grow up to affect oral health.